Padlock and other locks



UNITED STATES PATENT OFFIOE.

JOSEPH NOGK, OF PHILADELPHIA, PENNSYLVANIA.

PADLOCK .AND CTI-IER LOCKS.

Specification of Letters Patent No. 1,243, dated July 16, 1839.

T0 all 107mmz't may con/cem Be it known that I, Josemi Nomi. of the city of Philadelphia, in the State of Pennsylvania, have invented a new and Improved Mode of Construct-ingl Padlocks and Locks of other Kinds, by which improvements they are secured against the danger of being picked or opened by means of a false key, and also against that of beingopened hv means of a blow given either by accident or design and by which the bolt or catch of ordinary padlocks are frequently started and the lock opened; and I do hereby declare that the following is a full and eXact description thereof.

Figures l and 2 in the accompanyingdrawing show the interior of the lock, the front, or key-hole, plate, being removed for that purpose.

In constructing my padlock or locks of other kinds I employ what I denominate escapement tumblers which are in place in Fig. 2 but in Fig. l are removed for the purpose of distinctly showing the catch a which when the lock is closed hold the how 7) of the padlock on its inner side. This catch is shown separately at Fig. 3. The upper end c of this catch falls into a` recess made in the bow Z2, as shown by the dotted lines, Fig. 2. On a pin (l, I place two or more tumblers. as shown at c, Fig. 2. and at c and f, Figs. el. and Upon each of these tnmblers, whatever may be their number` I. form two catches, or hooks, g and il, and on the end of the bow I make two corresponding projections upon which the. respective hooks on the tumblers may catch. as shown in the drawing. The space between the hooks on the tumblers is just sufficient for the escape of the bow, and it is necessary, therefore, to the opening of the lock, that these tumblers should he held by the key in the precise situation to admit thereof. A springl z', z', bears upon the tumblers, and also upon the catch, or catches, being slit, or divided, so as to act separately on each, so as to keep them in place when they are not acted on by the keys. To arrest the key when the catch is disengaged by it. and the tumblers all brought to a proper position, there is a stump, or pin j, which prevents its turning farther, and allows the how to be withdrawn. The key Z, must, of course. he so formed as to correspond with that of the catch, or catches, and of the tuinhlers; and it will he perceived that the slightest deviation in this respect will effectA ually prevent the opening` of the lock; and it may be confidently asserted that the workman by whom it was made would not be able to adapt a new key to it. without taking the lock apart; and, as the how, when the lock is closed, is held on one side by the catch, or catches. and on the opposite side by the tumblers, they cannot he both disengaged by a blow, but the lock must be opened by the proper key. In Fig. is shown the adaptation of the same principle to trunk or desk locks, the plate b having` the catch Z' attached to it, being substituted for the bow I), in Fig.

lllhat I claim as my invention, and desire to secure by Letters Patent is- The employment both in padlocks and locks of other descriptions` of what I have denominated escapement tumblers, constructed and operating in the manner set forth; and I also claim, in combination with such tumblers, the en'iployment of a catch, or of catches, which shall hold the bow of the lock, when the saine is closed, on the side opposite to that on which it is held by the hooks, or catches, of the tumhlers; the whole being` constructed and operating substantially as herein described and made known.

JOSEPH NOOK.

lVitnesses C. H. IVILTBERGER, LINTON THoRN. 

